Vintage Synth Repair

I just got your return message tonight, but I am leaving early tomorrow
morning for a weekend conference. I'll look up my notes and schematic when I
get back. Try removing that one reed and see if it has any affect. It could
be a noisy input transistor or resistor before the volume control. I'll do
more checking later.

Keith  Niver

-----Original Message-----
From: Deke The Geek [mailto:deke@...] 
Sent: Thursday, January 09, 2003 4:17 PM
To: vintagesynthrepair@yahoogroups.com
Subject: RE: [vintagesynthrepair] new to the group - 200A


>Does it get scratchy when sitting idle, or when you turn the volume 
>control,

The scratchiness isn't a result of a dirty volume pot (I don't think so
anyway), but yes... it does it at idle.

>and is the "noise" level controlled by the volume control,

Yup!

>and does the vibrato have any effect on the noise?

I don't think so.

>Is the noise present at the headphone jack?

Yes. It's present on internal speakers and externally through an amp.

>When you play the keys, are there certain notes that increase the 
>"noise" and do all the keys work, and sound relatively in tune?

I think there is one key that needs I little more clearance... the second F
key from the bottom. It's not bad, though. Other than that, all the keys
work well, and sound in tune. This is a very cool piano. I took it apart
last night and checked out the insides... the keying mechanism is amazing.
When I put it back together I had no vibrato... took it apart again and
realized I had a loose ground connection on the left end of the metal cover
over the tines (is tines right?). I secured the ground and it works properly
again. BTW, I only have two of the legs... does anyone have spares to sell?

Deke The Geek




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